MORPHOLOGY, PHASE AND PHOTOLUMINESCENCE OF ZnS MICROSTRUCTURES GROWN BY THERMAL DEPOSITION AT DIFFERENT TEMPERATURE OF SUBSTRATES

Abstract

In this paper, we present about influent of temperature at the possitions where we puted the silica substrates on morphology, phase and photoluminescence of ZnS microstructures by thermal evaporation of ZnS powder in Ar gas ambient at atmospheric pressure. From X-ray diffraction pattern (XRD), the prepared microstructures have wurtzite (hexagonal) structures for ZnS phase and appear ZnO phase at lower temperature areas. The morphology of the microstructures change depending on substrate temperatures. The photoluminescence spectrum (PL) at room temperature shows that the shift from ultraviolet (UV) emission at high substrate temperature to strong blue emission at lower substrate temperature. The reasons of these peaks will be discussed in detail.